I'm in the market for the best desktop laptop stand for my 15" Macbook Pro. I don't want to spend more than $70. The 3 I've found are Griffin's Elevator, Logitech Alto, APC Ergonomic Notebook Stand with 4-Port USB 2.0 Hub, and Mstand? Any recommendations/reviews on those and others? I will be using an external keyboard and mouse. Thanks.